The vector sum of two forces is perpendicular to their vector difference. In that case the forces are.. Options :- a) equal to each other b) equal to each other in magnitude c) not equal to each other in magnitude... Ans is b... explanation??

Hint: what is special about the dot product of perpendicular vectors?

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Originally Posted by ebaines

Hint: what is special about the dot product of perpendicular vectors?

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